Q31 of 40 Page 1

In a classroom, 4 friends are seated at the points A, B, c and D as shown in Fig. 2. Champa and Chameli walk into the class and after observing for a few minutes Champa asks Chameli, “Don’t you think ABCD is a square?” Chameli disagrees. Using distance formula, find which of them is correct.


For ABCD be a square, AB = BC = CD = DA and AC = BD

Coordinates of A = (3, 4)


Coordinates of B = (6, 7)


Coordinates of C = (9, 4)


Coordinates of D = (6, 1)








Here, AB = BC = CD = AD and AC = BD


∴ ABCD is a square and Champa is right.


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